Airtac BB Double Male Thread Straight Connector BB0103-S
SUS304 stainless variant (-S)The AirTAC Airtac BB Double Male Thread Straight Connector BB0103-S is a genuine male / male connector rated to 3.0 MPa proof pressure and 0 to +150 °C, for joining threaded pipe runs.
- TypeMale / male connector
- SeriesBB
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure3.0 MPa
- Temperature0 to +150 °C
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac BB Double Male Thread Straight Connector BB0103-S
The BB0103-S is a stainless male connector that joins two male-threaded ports of different sizes in one turned part: PT 1/8 on one face and PT 3/8 on the other. AirTAC machines the whole fitting in SUS304 rather than nickel-plating a standard body, so it is a solid stainless component by construction, not a coating that can wear through at the hex.
The family it belongs to is built for conditions that defeat resin push-in fittings: 3.0 MPa proof pressure and a 0 to 150 C working temperature, with vacuum capability down to -750 mmHg. That combination is why this connector appears on hot air lines, near dryers and ovens, and on plant that gets washed down regularly. Threads are PT (taper) throughout - there is no NPT or G version in this code.
Airtac BB Double Male Thread Straight Connector BB0103-S Technical Specifications
| Model | Airtac BB Double Male Thread Straight Connector BB0103-S |
|---|---|
| Type | Male / male connector |
| Series | BB |
| Connection | Threaded both ends |
| Body material | Stainless steel 304 (-S variant) |
| Working pressure | 0 - 1.0 MPa (0 - 10 kgf/cm2) |
|---|---|
| Negative pressure | -750 mmHg (10 Torr) |
| Proof pressure | 3.0 MPa |
| Temperature | 0 to +150 °C |
| Thread standard | PT (Rc tapered) unless the code says otherwise |
Nickel-plated metal body. AirTAC does not publish a per-part material breakdown for this family. This family is rated to 150 °C, but the TUBE is usually the limit - confirm your tubing's temperature rating before running it hot. Stainless (-S): SUS304 body throughout, for copper-free and corrosive environments. Pressure and temperature ratings are unchanged from the nickel-plated version. AirTAC publishes flow as a characteristic curve rather than a single figure, so no L/min value is listed.
Model Code: Airtac BB Double Male Thread Straight Connector BB0103-S
| BB | Male / male connector. |
|---|---|
| 4 / 6 / 8 / 10 / 12 | Tube outside diameter in mm (3.2 mm exists on the mini series). |
| M5 / 01 / 02 / 03 / 04 | Thread: M5x0.8, 1/8", 1/4", 3/8", 1/2" (M3 on the mini series). |
| D | Black. Blank = grey. |
| -S | Stainless-steel body. |
Fitting & Sealing Notes
- check Cut the tube square and clean before pushing it home, or the seal will leak.
- check Push until it stops, then pull back to check the chuck has gripped.
- check To release, press the collet ring fully in and pull the tube out.
- check Threaded parts arrive with sealant on the thread; M5 sizes use a sealing gasket.
- check Match the tube OD exactly - a 6 mm fitting will not hold 1/4" tube.
Where the Airtac BB Double Male Thread Straight Connector BB0103-S Is Used
Plating and wash line jigs
Step-up air feeds on plating tanks and rinse stations where chrome, acid mist and alkali strippers strip plated finishes off standard fittings; solid SUS304 keeps the 1/8 x 3/8 transition intact.
Retort and steriliser services
Instrument air take-offs around food retorts and autoclaves, where ambient temperatures well past 70 C exclude resin one-touch fittings and copper-free hardware avoids product contamination.
Marine and coastal compressor manifolds
Permanent 1/8 to 3/8 adapters inside salt-laden engine rooms and dockside compressor skids, where a plated steel connector rusts at the hex within a season and a stainless body does not.
Is the Airtac BB Double Male Thread Straight Connector BB0103-S the Right Part?
Size around this one: step down to BB0102 for a 1/8 to 1/4 transition, or step up to BB0104 when the far port is 1/2. If both ends need to be 1/8 or both 3/8, the same-size BB0101 or BB0303 is the correct part instead of a reducer. Where one side of the transition is female, a BD connector can replace this BB plus a separate bushing and remove a joint from the line.
Because BB parts are thread-to-thread with no tube seat, there is no applicable tubing size to match - the thread codes are the whole selection. AirTAC publishes no tightening torque for this family, so assemble with a standard wrench and PTFE tape on the taper threads rather than chasing a torque figure that does not exist.
Quick checklist
- ✓ Tube outside diameter matches exactly
- ✓ Thread size and standard match the port
- ✓ Working pressure within 0 - 1.0 MPa (0 - 10 kgf/cm2)
- ✓ Temperature within 0 to +150 °C
Airtac BB Double Male Thread Straight Connector BB0103-S FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure to -750 mmHg, proof pressure 3.0 MPa, and a working temperature of 0 to +150 C. This SKU is the PT 1/8 x PT 3/8 male connector machined throughout in SUS304 stainless steel, with no tube seat - both ends are male threads.
The threads are PT taper only, as marked in the code; AirTAC does not offer this part in NPT or G. No tightening torque is published for the BB family, so run PTFE tape on the tapers, wrench-tighten to a sound seal, and stop before you distort the hex. For same-size joints instead of this 1/8 to 3/8 step, ask for BB0101 or BB0303.
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